Development of a cost effective three-dimensional posture analysis tool: validity and reliability

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dc.contributor.authorBrink, Yolandi
dc.contributor.authorLouw, Quinette
dc.contributor.authorGrimmer, Karen
dc.contributor.authorSchreve, Kristiaan
dc.contributor.authorvan der Westhuizen, Gareth
dc.contributor.authorJordaan, Esme
dc.date.accessioned2016-09-02T14:38:54Z
dc.date.available2016-09-02T14:38:54Z
dc.date.issued2013
dc.description.abstractBACKGROUND: The lack of clear understanding of the association between sitting posture and adolescent musculoskeletal pain, might reflect invalid and/or unreliable posture measurement instruments. The psychometric properties of any new measurement instrument should be demonstrated prior to use for research or clinical purposes. This paper describes psychometric testing of a new three-dimensional (3D), portable, non-invasive posture analysis tool (3D-PAT), from sequential studies using a mannequin and high school students. METHODS: The first study compared the 3D-(X-, Y- and Z-) coordinates of reflective markers placed on a mannequin using the 3D-PAT, and the Vicon motion analysis system. This study also tested the reliability of taking repeated measures of the 3D-coordinates of the reflective markers. The second study determined the concurrent validity and test-retest reliability of the 3D-PAT measurements of nine sitting postural angles of high school students undertaking a standard computing task. In both studies, concordance correlation coefficients and Intraclass correlation coefficients described test-retest reliability, whilst Pearson product moment correlation coefficients and Bland-Altman plots demonstrated concurrent validity. RESULTS: The 3D-PAT provides reliable and valid 3D measurements of five of the nine postural angles i.e. head flexion, neck flexion, cranio-cervical angle, trunk flexion and head lateral bending in adolescents undertaking a standard task. CONCLUSIONS: The 3D-PAT is appropriate for research and clinical settings to measure five upper quadrant postural angles in three dimensions. As a measurement instrument it can provide further understanding of the relationship between sitting posture, changes to sitting posture and adolescent musculoskeletal pain.en_US
dc.description.accreditationWeb of Science
dc.identifier.citationBrink et al. (2013). Development of a cost effective three-dimensional posture analysis tool: validity and reliability. BMC Musculoskeletal Disorders, 14: 335en_US
dc.identifier.issn1471-2474
dc.identifier.urihttp://hdl.handle.net/10566/2395
dc.language.isoenen_US
dc.publisherBioMed Centralen_US
dc.rights© 2013 Brink et al.; licensee BioMed Central Ltd. This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
dc.source.urihttp://dx.doi.org/10.1186/1471-2474-14-335
dc.subjectMusculoskeletal painen_US
dc.subjectMusculoskeletal disordersen_US
dc.subjectMusculoskeletal injuryen_US
dc.subjectAdolescentsen_US
dc.subjectMeasurementen_US
dc.titleDevelopment of a cost effective three-dimensional posture analysis tool: validity and reliabilityen_US
dc.typeArticleen_US

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